On Yamase-winds during the summer season in Aomori prefecture, 1954

Abstract

Author investigated on the effects of the mountain ranges in Aomori prefecture to Yamase-winds, the prevailing easterlies, caused the cool weather damage in summer, 1954.Their appearance days were determined by the wind directions of some points and the weather maps, and then their mean wind direction at each point was obtained (see Table 2). Their direction formed some continuous stream line deviated by the Ou range and the Tsugaru- and the Shimokita-peninsula ranges of mountain and others.These topography affected not only wind direction but also air temperatures and sunshins, i. e. it is shown that these ranges of mountain have the protection effect to Yamase-winds (see Fig. 1).The duration of sunshine of the side on the Sea of Japnn in Aomori prefecturs in July, 1954 was very long in proportion to the cool weather, but on the Pacific coast was short sunshin and cool (see Fig. 2).